\ Dual-π-phase-shift distributed feedback fiber laser for strain sensing

被引：0

作者：

Zhang, Xiaolei ^{[1
]}

Peng, Gangding ^{[2
]}

Wang, Chang ^{[1
]}

Sun, Zhihui ^{[1
]}

Song, Zhiqiang ^{[1
]}

Ni, Jiasheng ^{[1
]}

机构：

[1] Shandong Acad Sci, Laser Inst, Jinan, Peoples R China

[2] Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

来源：

22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3 | 2012年 / 8421卷

关键词：

Dual-pi-phase-shift; distributed feedback fiber laser; strain sensing; beat frequency; SENSOR;

D O I：

10.1117/12.970307

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

A dual-pi-phase shift distributed feedback fiber laser (DFB FL) with symmetric structure is investigated as a strain sensor. The sensing performances under both monolithic and local axial strain are discussed by use of transfer matrix method. While the two lasing wavelengths of dual-pi-phase shift DFB FL experience the same change as that of single-pi-phase shift DFB FL under monolithic strain, their wavelength interval changes with local strain. And the strain sensitivity of beat frequency is calculated to be 70.6 MHz/mu epsilon while one phase shift area is insensitive.

引用

页数：4

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